![Page 1: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/1.jpg)
8888CH
AP
TE
R
SECONDARY STORAGE
![Page 2: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/2.jpg)
8-2
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Competencies
Distinguish between primary & secondary storage
Discuss the different types of storage media
Describe the traditional floppy disk and the high capacity floppy disks
Describe various types of hard disk devices
![Page 3: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/3.jpg)
8-3
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Competencies cont.
Describe ways to improve hard-disk operations
Describe the different types of optical disks
Describe other kinds of secondary storage devices
![Page 4: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/4.jpg)
8-4
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Storage
Primary storageVolatile
Temporary
Secondary storageNonvolatile
Permanent
Secondary storage characteristics
Media
Capacity
Storage devices
Access speed
![Page 5: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/5.jpg)
8-5
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Secondary Storage Devices
![Page 6: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/6.jpg)
8-6
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Floppy Disks
Diskettes
Floppies
Portable storage media
Floppy disk drives (FDD)
Traditional Floppy Disk
![Page 7: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/7.jpg)
8-7
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Traditional Floppy Diskette
![Page 8: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/8.jpg)
8-8
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Types of Floppies
High capacity
Known as a floppy-disk cartridge
Require special disk drives
Three well known typesZip disks
HiFD disks
SuperDisks
![Page 9: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/9.jpg)
8-9
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Hard Disks
Use thicker, metallic platters for storage
Faster than a floppy diskette
Large capacity
Sensitive instruments
![Page 10: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/10.jpg)
8-10
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Materials that Cause a Head Crash
![Page 11: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/11.jpg)
8-11
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Internal Hard Disk
Located inside system unit
Known as a fixed disk
Designated as the C drive
Advantages over floppies
Access speed
Capacity
![Page 12: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/12.jpg)
8-12
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Hard-Disk Cartridges
Removable hard disks
Used to complement
internal hard disk
Capacities of 10 to 20
GB PC Card Hard Disks
![Page 13: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/13.jpg)
8-13
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Hard-Disk Packs
Removable
Massive storage capacity
Common in mainframes
Resembles stack of vinyl records
![Page 14: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/14.jpg)
8-14
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Hard-Disk Pack
![Page 15: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/15.jpg)
8-15
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Performance Enhancements
Disk caching
Redundant arrays of inexpensive disks (RAID)
File compression and decompression
![Page 16: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/16.jpg)
8-16
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Optical Disks
Compact
Permanent storage
Laser beams reflect off pits
Two common typesCD
DVD
![Page 17: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/17.jpg)
8-17
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Compact Disc
Optical format
From 650 MB to 1 GB capacity
Rotation speeds vary
Types Read only: CD-ROM
Write once: CD-R
Rewriteable: CD-RW
Picture CDs and Photo CDs
![Page 18: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/18.jpg)
8-18
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Digital Versatile Disc
Digital Versatile Disk or Digital Video Disk (DVD)
Similar to CDs, but can store more data
TypesRead only
Write once
Rewritable
![Page 19: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/19.jpg)
8-19
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
DataPlay
Optical disk
Write once format
Quarter size500 MB capacity
Holds 5 hours of CD-quality sound
Use for storing and playing music files
![Page 20: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/20.jpg)
8-20
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Other Types of Secondary Storage
Solid-state storage
Internet hard drives
Magnetic tape
![Page 21: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/21.jpg)
8-21
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Solid-State Storage
Flash memory cardsWidely used in notebook computers
Used to record MP3 music files
Key chain hard drives Key chain flash memory devices
Connects to a USB port
![Page 22: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/22.jpg)
8-22
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Internet Hard Drives
![Page 23: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/23.jpg)
8-23
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Magnetic Tape
External storage
Provides sequential accessInformation stored in sequence
Slower than disks which provide direct access
Magnetic tape streamers or tape cartridges used by both mainframes and microcomputers
![Page 24: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/24.jpg)
8-24
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
A Look to the FutureBlu-Ray Technology
New standard in storage
Blu-RayNew disks use blue laser light instead of the red laser light used in traditional CD players
Disks may ultimately hold Over 30GB on one-sided disks
Over 50GB on two-sided disks
![Page 25: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/25.jpg)
8-25
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Key Terms
1.44 MB 31/2-inch disk (211)2HD (211)access time (210)C drive (213)capacity (210)CD (compact disc) (216)CD burner (216)CD-R (CD-recordable) (216)
CD-ROM (compact disc-read only memory) (216)
CD-RW (compact disc rewritable) (217)
DataPlay (220)
density (211)
direct access (221)
disk caching (213)
Diskette (210)
![Page 26: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/26.jpg)
8-26
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Key Terms
disk (210)
DVD (digital versatile disc or digital video disc) (217)
DVD-RW or DVD+RW (DVD rewritable) (217)
DVD-R or DVD+R (DVD recordable) (217)
DVD-RAM (DVD-random-access memory) (217)
DVD player (217)
DVD-ROM (digital versatile disc-read only memory) (217)
Erasable optical disk (217)
file compression (215)
![Page 27: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/27.jpg)
8-27
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Key Terms
file decompression (215)
fixed disk (212)
flash memory card (221)
flexible disk (211)
floppies (211)
floppy disk (210)
floppy disk drive (FDD) (210)
Floppy-disk cartridge (211)
hard disk (212)
hard-disk cartridge (213)
hard-disk pack (214)
head crash (212)
HiFD disk (212)
high capacity floppy disk (211)
![Page 28: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/28.jpg)
8-28
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Key Terms
i-drive (221)
internal hard disk (212)
Internet hard drive (221)
jewel box (216)
key chain hard drives (221)
label (211)
land (216)
magnetic tape (222)
magnetic tape reel (222)
magnetic tape streamer (222)
media (210)
medium (210)
multiread (217)
multisession (217)
nonvolatile storage (210)
online storage (221)
![Page 29: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/29.jpg)
8-29
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Key Terms
optical disk (216)
optical disk drive (216)
PC Card hard disk (214)
Photo CD (217)
Picture CD (217)
pit (216)
platters (212)
primary storage (210)
reading (210)
redundant arrays of inexpensive disks (RAID) (215)
removable hard disk (213)
rotational speed (216)
secondary storage (210)
secondary storage device (210)
sector (211)
![Page 30: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/30.jpg)
8-30
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Key Terms
sequential access (221)
shutter (211)
single-session (217)
solid-state storage (220)
storage devices (210)
SuperDisk (212)
tape cartridge (222)
track (211)
volatile storage (210)
write-protection notch (211)
writing (210)
Zip disk (211)
![Page 31: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/31.jpg)
8-31
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
FAQs
What is the difference between primary storage and secondary storage?
What kinds of floppy disks are available?
What is the C drive of a computer?
When would I use a hard-disk cartridge?
What is the difference between a CD and a DVD?
![Page 32: 88 CHAPTER SECONDARY STORAGE. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8-2 Competencies Distinguish between primary & secondary storage](https://reader035.vdocuments.net/reader035/viewer/2022062712/56649c3c5503460f948e5ea1/html5/thumbnails/32.jpg)
8-32
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.
Discussion Questions
Discuss three ways to improve the performance of hard disks.
Describe the different types of compact discs.
Describe the different types of DVDs.
What are the advantages and disadvantages of using an Internet hard drive?
Describe solid state technology. Discuss the many uses for key chain flash memory devices.